CVE-2021-21800

6.1 mediumEPSS 14%

Medium (6.1) in advantech r-seenet. EPSS 14% chance of exploitation in the next 30 days.

Cross-site scripting vulnerabilities exist in the ssh_form.php script functionality of Advantech R-SeeNet v 2.4.12 (20.10.2020). If a user visits a specially crafted URL, it can lead to arbitrary JavaScript code execution in the context of the targeted user’s browser. An attacker can provide a crafted URL to trigger this vulnerability.

Severity

CVSS 3.1

6.1 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

EPSS: 14% chance of exploitation in the next 30 days; higher than 96% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-07-16
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

advantech:r-seenet

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1271
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1271

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